Memories of a Future Past (слэш)

He has tried forgiving his enemies, fighting his friends, building weapons, and wasting his one chance at love, but it’s his first time forgetting who he is. Perhaps he ought to be a tad more concerned, but the sorcerer staring him down is kind of distracting. He has exactly one second to admit to himself that the dark-haired stranger clad in leather, with those piercing green eyes, is a sight to behold, before a dagger is pressed to his throat.
“What is a Midgardian doing on Asgard?”
“I’m not sure.” He tries not to panic, and fails. “Do you know who I am?”
In which Tony has forgotten everything, and the god of mischief has never met Iron Man, because on top of being amnesiac, Tony has been thrown two centuries into the past to fix the future... and the men who shall build it, together.

Translation into Russian: Воспоминания о будущем Прошлом by MissMadaline.